Setting Of The Position-Dependent Variation - VDO Ocean Line COMPASS Montage- Und Bedienungsanleitung

The automatic compensation should be repeated after com-
pass installation, after slipping, prior to long routes, after wel-
ding operations, after the installation of electrical consumers,
but at least once a year.
Please also note the „semihard magnetism“ effect on steel
ships, which appears when the ship has been exposed to the
terrestrial magnetic field without position change for a long time
(for instance during winter). After some days in the water this
effect has disappeared. This means that after watering a ship
the compass compensation should be repeated several days
later.

Setting of the position-dependent variation

This operation is necessary to set the valid local variation. The angular
variation is found in the nautical map. Setting the variation eases wor-
king with the map, and after compensation (see page 30) the compass
will indicate the true course.
Enter the variation as follows:
Switch the power on while keeping the button pushed. The pointer is in
„OFF“ position, and the display indicates „OFFSET“.
Release the button when „OFFSET“ appears. The local variation is indi-
cated after several seconds. In the system as supplied the indication will
be 0.
(Note: You have about 5 seconds to start the „OFFSET“ function, after
this time the function is automatically exited). For each button activation
the value is incremented by 1°. Hold the button down; the value will in-
crement at increasing speed up to 100°, then it will decrement from -100°.
Positive setting = variation in eastern direction.
Negative setting = variation in western direction.
Release the button after setting the correct value (3° in the example).
After some seconds the display automatically changes to „CAL“.
After another 5 seconds a normal course indication is shown (in the ex-
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POSITION-DEPENDENT VARIATION
OFFSEt
OS 000